py bindings -- fix bug in update scheduling
py bindings -- fix bug in update scheduling

mikeseven/Halide,delcypher/Halide,dougkwan/Halide,fengzhyuan/Halide,kenkuang1213/Halide,jiawen/Halide,dan-tull/Halide,delcypher/Halide,ronen/Halide,myrtleTree33/Halide,adasworks/Halide,ronen/Halide,rodrigob/Halide,dan-tull/Halide,aam/Halide,mcanthony/Halide,smxlong/Halide,myrtleTree33/Halide,smxlong/Halide,aam/Halide,mcanthony/Halide,mikeseven/Halide,smxlong/Halide,delcypher/Halide,tdenniston/Halide,gchauras/Halide,rodrigob/Halide,tdenniston/Halide,fengzhyuan/Halide,lglucin/Halide,rodrigob/Halide,rodrigob/Halide,adasworks/Halide,ayanazmat/Halide,kgnk/Halide,ayanazmat/Halide,damienfir/Halide,tdenniston/Halide,kenkuang1213/Halide,dougkwan/Halide,dan-tull/Halide,delcypher/Halide,mcanthony/Halide,kenkuang1213/Halide,smxlong/Halide,dougkwan/Halide,kenkuang1213/Halide,jiawen/Halide,delcypher/Halide,adasworks/Halide,myrtleTree33/Halide,myrtleTree33/Halide,aam/Halide,dan-tull/Halide,tdenniston/Halide,fengzhyuan/Halide,kenkuang1213/Halide,adasworks/Halide,gchauras/Halide,lglucin/Halide,damienfir/Halide,fengzhyuan/Halide,kgnk/Halide,damienfir/Halide,tdenniston/Halide,fengzhyuan/Halide,delcypher/Halide,rodrigob/Halide,lglucin/Halide,fengzhyuan/Halide,tdenniston/Halide,adasworks/Halide,ronen/Halide,ronen/Halide,rodrigob/Halide,adasworks/Halide,myrtleTree33/Halide,aam/Halide,ayanazmat/Halide,mcanthony/Halide,rodrigob/Halide,ronen/Halide,jiawen/Halide,psuriana/Halide,rodrigob/Halide,tdenniston/Halide,lglucin/Halide,smxlong/Halide,ronen/Halide,jiawen/Halide,kgnk/Halide,dougkwan/Halide,dougkwan/Halide,myrtleTree33/Halide,damienfir/Halide,damienfir/Halide,ayanazmat/Halide,delcypher/Halide,dan-tull/Halide,gchauras/Halide,jiawen/Halide,aam/Halide,kgnk/Halide,dan-tull/Halide,ayanazmat/Halide,smxlong/Halide,mcanthony/Halide,lglucin/Halide,kgnk/Halide,jiawen/Halide,kenkuang1213/Halide,aam/Halide,kgnk/Halide,lglucin/Halide,smxlong/Halide,kgnk/Halide,ayanazmat/Halide,fengzhyuan/Halide,dougkwan/Halide,gchauras/Halide,dougkwan/Halide,psuriana/Halide,mikeseven/Halide,myrtleTree33/Halide,damienfir/Halide,smxlong/Halide,mikeseven/Halide,aam/Halide,mcanthony/Halide,kenkuang1213/Halide,mcanthony/Halide,ayanazmat/Halide,ronen/Halide,psuriana/Halide,tdenniston/Halide,dougkwan/Halide,jiawen/Halide,psuriana/Halide,mikeseven/Halide,adasworks/Halide,delcypher/Halide,kgnk/Halide,dan-tull/Halide,damienfir/Halide,fengzhyuan/Halide,kenkuang1213/Halide,ayanazmat/Halide,ronen/Halide,adasworks/Halide,dan-tull/Halide,damienfir/Halide,lglucin/Halide,gchauras/Halide,psuriana/Halide,psuriana/Halide,myrtleTree33/Halide,gchauras/Halide,mcanthony/Halide,psuriana/Halide